<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .login-header #link {
            margin-left: 42%;
            font-size: 25px;
            cursor: pointer;
        }

        *,
        a,
        h6 {
            padding: 0;
            margin: 0;
        }

        .login {
            display: none;
            width: 512px;
            height: 280px;
            position: fixed;
            border: #ebebeb solid 1px;
            left: 50%;
            top: 50%;
            background-color: #fff;
            box-shadow: 0px 0px 20px #ddd;
            z-index: 9999;
            transform: translate(-50%, -50%);
        }

        .login-title {
            width: 100%;
            margin: 10px 0px 0px 0px;
            text-align: center;
            line-height: 40px;
            height: 40px;
            font-size: 15px;
            position: relative;
            cursor: move;
        }

        .login-input-content {
            margin-top: 20px;
        }

        .login-button {
            width: 50%;
            margin: 30px auto 0px auto;
            line-height: 40px;
            font-size: 14px;
            border: #ebebeb 1px solid;
            text-align: center;
        }

        .login-bg {
            display: none;
            width: 100%;
            height: 100%;
            position: fixed;
            top: 0;
            left: 0;
            background: rgba(0, 0, 0, .3);

        }

        a {
            text-decoration: none;
            color: #000000;
        }

        .login-button a {
            display: block;
        }

        .login-input input,
        input.list-input {
            float: left;
            line-height: 35px;
            height: 35px;
            width: 350px;
            border: #ebebeb 1px solid;
            text-indent: 5px;
        }

        .login-input {
            overflow: hidden;
            margin: 0px 0px 20px 0px;
        }

        .login-input label {
            float: left;
            width: 90px;
            padding-right: 10px;
            text-align: right;
            line-height: 35px;
            height: 35px;
            font-size: 14px;
        }

        .login-title span {
            position: absolute;
            font-size: 12px;
            right: -20px;
            top: -30px;
            background: #fff;
            border: #ebebeb solid 1px;
            width: 40px;
            height: 40px;
            border-radius: 20px;
        }
    </style>
</head>

<body>
    <div class="login-header"><a href="javascript:;" id="link">点击,弹出登录框</a></div>
    <div id="login" class="login">
        <div id="title" class="login-title">登录会员
            <span><a id="closeBtn" href="javascript:void(0);">关闭</a></span>
        </div>
        <div class="login-input-content">
            <div class="login-input">
                <label for="">用户名</label>
                <input type="text" placeholder="请输入用户名" name="info[username]" id="username" class="list-input">
            </div>
            <div class="login-input">
                <label for="">登录密码:</label>
                <input type="password" placeholder="请输入登录密码" name="info[password]" id="password">
            </div>
        </div>
        <div id="loginBtn" class="login-button"><a href="javascript:void(0);" id="login-button-submit">登录会员</a></div>
    </div>
    <div id="bg" class="login-bg"></div>
    <script>
        var link = document.querySelector('#link')
        var login = document.querySelector('.login')
        var bg = document.querySelector('#bg')
        var title = document.querySelector('#title')
        var closeBtn = document.querySelector('#closeBtn')
        link.addEventListener('click', function () {
            login.style.display = 'block'
            bg.style.display = 'block'
        })
        closeBtn.addEventListener('click', function () {
            login.style.display = 'none'
            bg.style.display = 'none'
        })
        title.addEventListener('mousedown', function (e) {
            var x = e.pageX - login.offsetLeft
            var y = e.pageY - login.offsetTop
            document.addEventListener('mousemove', clear)
            function clear(e) {
                login.style.left = e.pageX - x + 'px'
                login.style.top = e.pageY - y + 'px'
            }
            document.addEventListener('mouseup', function (e) {
                this.removeEventListener('mousemove', clear)
            })
        })










































        // var link = document.querySelector('#link')
        // var login = document.querySelector('.login')
        // var bg = document.querySelector('.login-bg')
        // var title = document.querySelector('#title')
        // var closeBtn = document.querySelector('#closeBtn')
        // link.addEventListener('click', function () {
        //     login.style.display = 'block'
        //     bg.style.display = 'block'
        // })
        // closeBtn.addEventListener('click', function () {
        //     login.style.display = 'none'
        //     bg.style.display = 'none'
        // })

        // title.addEventListener('mousedown', function (e) {
        //     var x = e.pageX - login.offsetLeft
        //     var y = e.pageY - login.offsetTop
        //     document.addEventListener('mousemove', move)
        //     function move(e) {
        //         login.style.left = e.pageX - x + 'px'
        //         login.style.top = e.pageY - y + 'px'
        //     }

        //     document.addEventListener('mouseup', function (e) {
        //         this.removeEventListener('mousemove', move)
        //     })
        // })




    </script>
</body>

</html>